Stylographic fountain pen



R. ULLRICH STYLOGRAPHIC FOUNTAIN PEN.

APPLICATION FILED .IULY 1| I92I.

Patented Aug. 8, 1922.

/A VINVHIUI I .I I I I RUDOWH ULLMCIBI, @E

.narrar ernten nnwann, new Jansen'.

STYLGMPIECEC FUNTAN EEN.

intanto,

Application led July To aZZ whom t may donnera.'

Be it known that l, RUDOLPH ULLRIGH, a

`citizen oi' the United States, and a resident of Newark, in the county of Essexand State of New Jersey, have made and invented certain new and useful improvements in Stylographic Fountain Pens, of which the following is a specification.

My invention relates to stylographie fountain pens and has for its object to provide a pen of this character which is eiiicient in operation, simple in construction, and, embodying a minimum number of parts, may be economically manufactured.

A further object is to provide a stylographic pen so constructed that the tip or stylus holder will always protrude from the pen proper a pre-determined amount, thus allowing the pen to be easily taken apart and assuring that it will be properly reassembled.

A further object is to provide a stylographic pen having a head section with an abutting ledge and against which the stylus tip is adapted to contact, thus roviding a chamber of fixed dimensions and? adapted to receive the weighted needle therein and provide for the proper amount or end play for the same.

'A further object is to improve generally and enhance the utility of articles ot the class to which the present invention relates, and with the foregoing and other objects in view, my invention consists in the improved stylographic fountain pen illustrated in the accompanying drawing and hereinafter describe and claimed, and in such variations and modifications thereof as will be obvious to those skilled in the art to which my invention relates, it being understood that changes may be made within the scope of what is claimed without departingF from the spirit of the invention.

ln the drawing accompanying and formin a part of this application:

igure 1 is a view in vertical longitudinal section of a stylographic fountain pen embodying the characteristic features of my invention;

Figure 2 is an enlarged view in lon itudinal section of the lower portion o the same but taken on a plane at 90 to the plane of the section of Figure 1;

Figure 3 is a detail view in elevation ot the stylus holder or tip Figure 4 is a top plan view thereof.

Specication of Letters Patent.

Patented Aug, e, 11922,

rsa1. seria no. 481,745.

Referring specifically to the several views, wherein similar reference numerals designate corresponding parts throughout, my improved pen is composed of a barrel 6 having the usual screw threads 7 at the lower and open extremity thereof. A cap 8 is internally threaded and adapted to close and protect the lower extremity of the pen or to wedgedly engage the upper and remote extremity ot' the pen when in use.

The head section 9 is formed with the reduced ledge 10 iitting within and wedgedly engaging the open extremity of the barrel 6. rlhe protruding extremity of the head section is externally tapered as at 11, so as to present a symmetrical appearance with regard to the remaining portions of the pen. rlhe lower extremity of the head 10 is bell mouthed as at 12, thus preventing any danger of ink reaching the finger-engageable portion of the pen, and presenting an increased bearing surface for Contact with the cap 8 when the pen is not in use. 'llhe head 10 is provided with a bore extending therethrough, the innermost portion 13 of which is restricted in diameter and communicates with the barrel of the pen 6 or the ink reservoir. Adjacent the restricted portion 13 is an intermediate bore 14, the two having the shoulder or ledge 15 therebetween, which, in conjunction with the intermediate portion 14, and adjacent parts, defines an annular air chamber, as will be hereinafter more fully explained. The bore immediately adjacent the annular air chamber llt is somewhat enlarged and threaded as at 16, while the lower and outer extremity of the bore is further enlarged so as to form an air entrance conduit 17.

'lhe stylus holder or tip 18 is externally threaded as at 19 and adapted to fit within and engage the threaded portion 16 of the bore of the head section. rlhe protruding extremity et the tip is tapered as at 20 so as to present a neat and symmetrical appearance in conjunction with the remaining portions of the pen, and supports at its outermost extremity 4the capillary writing tube 21. 'lhe remote or inner extremity of the tip is provided with a cylindrical projection of reduced diameter 22 which isadapted to abut against the ledge or shoulder 15 of the head section bore and, in conjunction with the intermediate portion 14 of the bore and adjoining portions of the threads 19, form the annular air chamber as previously the bore, lso that air may enter between the tip or holder and the adjacent side walls of the bore, thus forming the air inlet conduit as previously described. A suitable duct 23 extends axially along the threaded portion 19 of the .tip and provides for the entrance of air into the annular air cham- .ber la.

The reduced Aupper extremity'or cylindrical projection 22 of the tip is provided with the opening or notch 2t extending through the side walls thereof, and which notch is turned or out of alinement with the notch 23. Communicating with the writing tube 21 isA the duct 25, the upper extremity of which is enlarged to form the weightreceiving chamber 26 and with which the notch 24 above mentioned communicates, thus providing for the entrance of air from the annular air chamber 14 directly into the weight-receiving chamber 26. The rear extremity of the reduced cylindrical projection 22 abuts against the ledge or shoulder 15 of the head section and accordingly holds the tip protruding from the head section a predetermined amount and also insures that the size of the combined vweight-receiving chambers 13 and 26 will always remain con-l stant even though the pen be taken apart and re-assembled, thus insuring the proper amount of end play or pumping action of the weight and stylus needle.

The head section 9 'is preferably formed from a solid blank and the rear extremity thereof is milled and then routed out as at 27, so as to form an integral bridge or retaining end stop 28, this end stop not in any way interfering with the entrance of ink into the weight-receiving chambers 13-26, but at thesame time limiting the endwise play or pumping action of the weight 29. The stylus'needle 30 is secured to the weight 29 and is yadapted to provide a steady and constant flow of ink to the writing tube 21 in the usual and well-known manner.

'lihe head section as thus formed may be directly inserted within the ink reservoir of the fountain pen, or, as illustrated in Figures 1 and 2 of the drawings, the head sec- -tion'may be provided with a somewhat reand duct 24, are adapted to actas an inlet-Y for the ink. although it will be readily appreciated that the ink cannot under any circumstances How outwardly through these ducts and passages, due to the particular arrangement of the same.

maarre By forming the head section and stylus tip as thus described, I am able to materially reduce the number of parts involved in the construction of the ordinary stylographic fountain pen, and, further, have provided a Iweight-receiving chamber of predetermined size so as to prevent any danger or likelihood of the needle 30 moving upwardly beyond the lower wall of the writing tube 21 and also preventing it from protruding an undue distance therebeyond, thus lproviding for the proper working and writing of the stylus point, and, further, insuring a` steady and uniform flow of ink. Furthermore, the tip will always protrude from the head section a predetermined .amount so that thesymmetrical appearance of the pen and the proper relation between the tapered portion 11 of the head section and the extreme tip of the stylus will be maintained, all of which, and particulardly in connection with the fact that the pen may be most economically manufaetured, provides an improved and eiicient writing instrument.

Having thus described and explained my invention, I claim and desire to secure by Letters Patent:

1. A stylographic fountain pen comprising a barrel, a head section fitting therein and provided with a bore extending therethrough and having an end stop extending across the open inner extremity ofl the bore, the bore of said head section provided with a shoulder intermediate its ends, a-stylus tip threadedly engaging the lower portion of the bore of the head and provided with a re,-

duced c lindrical projection abutting against the said7 shoulder of the bore of the head section and held protruding from the said head section the proper amount`by lsaid shoulder, said stylus tip provided with a bore therein and forming with the bore of the head section a weight-receiving chamber of predetermined size and providing for the proper end play of the Weighted needle, and a weighted needle carried in said weight-receiving chamber, with the needle portion protruding through the lower extremity of.

said stylus tip, and means for allowing ink and air to pass inwardly between the stylus tip and adjacent walls of the bore of the head and preventing ink from returning b the same passage, substantially as describe 2. A stylographic fountain pen-comprisin a barrel, a eadsection fitting therein an having a bore extending therethrough, the

, remote or upper section 'of said bore of restricted size, and the intermediate ortion enlarged to form an annular air c amber with a shoulder at one extremity thereof, the lower portion of the bore of the head counter-bored and internall threaded, the lowery most extremity of the ore further enlarged and forming an air and ink inlet conduit, a stylus tip provided with an externalv thread naamw thereon engaging the threaded portion of said bore and forming a cylindrical projection at the rear extremity thereof tting Within the intermediate and enlarged portion of said bore and abutti against the said shoulder, said reduced cy indrical projection and adjacent walls of the bore forming an annular air chamber, said tip provided with an open-ended chamber cornmunicating with the upper and reduced extremity of the bore of the head section and forming in connection therewith a weightreceiving chamber, an end stop extending across but not closing the inner extremity of the bore of the head section, said weightreceiving chamber of xed and non-adjustable size, and a weight located within said weight-receiving chamber and limited in end play by the xed and predetermined size of said weight-receiving chamber, and a stylus needle carried by said weight and projecting through the stylus tip, an air inlet duct communicating With said annular air chamber, and a second duct out of alinement with the aforementioned duct and communieating with the chamber of the stylus tip.

Signed at New York, borough of Manhattan, in the county of New York and State of New York, this 30th day of June, A. D.

RUDOLPH ULLRlCl-l. Witnesses:

A. M. LINDENSTRUTH, ANNE V. Waren. 

